ok. sorry if i am bothering all of the veterans on this site but every time i search for somethig i get either 0 results found or information i need but cant understand. if anyone wouldnt mind, i need a thorough breakdown on what i need for my set up. I have a stock 420a and i am just trying to run on 8 psi as a daily driver.
i have installed a t3/t4, (i know overkill), fmic, fcd, and full exhaust.
now i need to tune. i know i need a wind band o2s, and a bigger fuel pump and im not sure of injectors. when my car is cold it takes 8 psi just fine so im guesing my stock injectors are up for the task. i was wondering which version of megasquirt to purchase and where i can get the kit cheapest. also what do you guys think about fuel system upgrades? what else if anything is required to install and program?

Thank you to whoever takes the time to deal with a newb.